Allied Telesis AT-x510-28GPX, Command Reference Manual, Page: 2329 / 2601

C613-50102-01 REV C Command Reference for x510 Series 2329
AlliedWare Plus™ Operating System - Version 5.4.6-1.x
NTP C
OMMANDS
NTP DISCARD
ntp discard
Overview Use this command to limit the time between NTP packets on the host or hosts
specified by the command
ntp restrict . Packets that arrive at greater frequency
than the limits are dropped or sent a kiss-of-death response.
Use the no variant of this command to return the limits to their default values.
Syntax
ntp discard minimum < 1-60 >
ntp discard average < 1-16 >
no ntp discard minimum
no ntp discard average
Default Minimum: 2
Average: 3 (8 seconds)
Mode Global Configuration
Example To drop NTP packets from the 192.168.1.0/16 subnet if they arrive more frequently
than every 5 seconds, and also send kiss-of-death messages, use the commands:
awplus# configure terminal
awplus(config)# ntp discard minimum 5
awplus(config)# ntp restrict 192.168.1.0/16 limited kod
To silently drop all NTP packets if they arrive more frequently than once every 4
seconds on average (2 to the power of 2), use the commands:
awplus# configure terminal
awplus(config)# ntp discard average 2
awplus(config)# ntp restrict default-v4 limited
awplus(config)# ntp restrict default-v6 limited
Related
Commands
ntp restrict
Parameter Description
minimum <1-60>
The minimum time between NTP packets, in seconds.
average <1-16>
A value that determines the minimum average time
between NTP packets. The number of seconds is 2 to the
power of the specified value (e.g. if you specify 4, the
minimum average time is 16 seconds).